Preparation method of display panel, display panel and display device

Abstract

The invention provides a preparation method of a display panel, the display panel and a display device. The method comprises the steps that a substrate is provided, the substrate comprises pixel opening areas and separation areas located between the pixel opening areas, a plurality of light-emitting devices are formed on the substrate, and the light-emitting devices correspond to the pixel opening areas one to one; forming a first conductive layer on one side, away from the substrate, of the light-emitting device; a patterned barrier layer is formed on the side, away from the substrate, of the first conductive layer, the barrier layer comprises a plurality of first patterns, and the first patterns are in one-to-one correspondence with the pixel opening areas; an electrochromism layer is formed on the side, away from the substrate, of the first conductive layer, the first part of the electrochromism layer corresponds to the separation areas one to one, and the barrier layer is covered with the second part of the electrochromism layer; removing the second part of the electrochromic layer and the barrier layer by using a stripping process; and forming a second conductive layer on one side, far away from the substrate, of the electrochromic layer. The display panel obtained by the preparation method is high in luminous efficiency.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a method for preparing a display panel, a display panel and a display device. Background Art

[0002] With the development of display technology, electronic devices with display screens, such as mobile phones and computers, are increasingly widely used. In some wide-viewing angle scenarios, users hope that the information displayed by the electronic device cannot be obtained by other people around them, that is, they hope that the electronic device has an anti-peeping function.

[0003] In the prior art, a privacy film is attached to the screen of an electronic device, which can filter out the light of the electronic device at a large viewing angle, thereby preventing the information displayed by the electronic device from being obtained by other people around. However, the setting of the privacy film affects the light extraction efficiency of the electronic device, and improvements need to be made to address this problem. Summary of the invention

[0004] In view of the problems in the prior art, an object of the present invention is to provide a method for manufacturing a display panel, a display panel and a display device, so as to improve the light extraction efficiency of the anti-peeping display panel.

[0005] An embodiment of the present invention provides a method for manufacturing a display panel, the method comprising the steps of:

[0006] Providing a substrate, the substrate comprising a pixel opening area and a separation area between the pixel opening areas, forming a plurality of light emitting devices on the substrate, the light emitting devices corresponding to the pixel opening areas one by one;

[0007] forming a first conductive layer on a side of the light emitting device away from the substrate;

[0008] forming a patterned blocking layer, the blocking layer comprising a plurality of first patterns, the first patterns corresponding to the pixel opening areas one by one;

[0009] forming an electrochromic layer on a side of the first conductive layer away from the substrate, wherein a first portion of the electrochromic layer corresponds to the separation areas one by one, and a second portion of the electrochromic layer covers the barrier layer;

[0010] removing the second portion of the electrochromic layer and the barrier layer by a stripping process;

[0011] A second conductive layer is formed on a side of the electrochromic layer away from the substrate.

[0012] In some embodiments, before forming the patterned barrier layer, the step of:

[0013] The first conductive layer is patterned to form a plurality of second patterns, wherein the second patterns correspond to the separation areas one by one.

[0014] In some embodiments, the electrochromic layer covers an edge of the second pattern.

[0015] In some embodiments, after forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the steps of:

[0016] The second conductive layer is patterned to form a plurality of third patterns, wherein the third patterns correspond to the second patterns one by one.

[0017] In some embodiments, after forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the steps of:

[0018] The first conductive layer and the second conductive layer are patterned, the first conductive layer forms a plurality of second patterns, the second conductive layer forms a plurality of third patterns, and the second patterns correspond to the third patterns and the separation areas one by one.

[0019] In some embodiments, the electrochromic layer is formed by a coating process.

[0020] In some embodiments, after forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the steps of:

[0021] forming a flat layer on a side of the second conductive layer away from the substrate;

[0022] A touch layer is formed on a side of the planar layer away from the substrate.

[0023] In some embodiments, before forming the first conductive layer on the side of the light emitting device away from the substrate, the method further includes the following steps:

[0024] An encapsulation layer is formed on a side of the light emitting device away from the substrate.

[0025] An embodiment of the present invention further provides a display panel, including:

[0026] A substrate, comprising pixel opening regions and separation regions between the pixel opening regions;

[0027] A plurality of light emitting devices are disposed on one side of the substrate and correspond one to one with the pixel opening areas;

[0028] A first conductive layer, located on a side of the light emitting device away from the substrate;

[0029] A patterned electrochromic layer is located on a side of the first conductive layer away from the substrate and corresponds one-to-one to the separation areas;

[0030] The second conductive layer is located on a side of the electrochromic layer away from the substrate.

[0031] In some embodiments, the first conductive layer includes a plurality of second patterns, and the second patterns correspond to the separation regions one by one.

[0032] In some embodiments, the second conductive layer includes a plurality of third patterns, and the third patterns correspond to the second patterns one by one.

[0033] In some embodiments, the electrochromic layer covers an edge of the second pattern.

[0034] An embodiment of the present invention further provides a display device, comprising the display panel as described above.

[0035] The display panel manufacturing method, display panel and display device provided by the present invention have the following advantages:

[0036] The thickness of the electrochromic layer obtained by the preparation method provided by the present invention is uniform and the position accuracy of the arrangement on the panel is high, which can improve the luminous efficiency of the display panel when emitting light. In addition, the present invention eliminates the transparent material layer originally located between two adjacent first patterns of the electrochromic layer, which can reduce the number of thin film layers located above the light-emitting device, thereby also improving the luminous efficiency of the light-emitting device and improving the luminous brightness of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0038] Figure 1 It is a structural schematic diagram of a display panel in the prior art;

[0039] Figure 2 is a flow chart of a method for preparing a display panel according to an embodiment of the present invention;

[0040] Figures 3 to 8 is a schematic structural diagram of a display panel manufacturing process according to Embodiment 1 of the present invention;

[0041] Fig. 9 is a schematic structural diagram of a display panel provided by Embodiment 1 of the present invention;

[0042] Figures 10 to 14 is a schematic structural diagram of a display panel manufacturing process according to Embodiment 2 of the present invention;

[0043] Fig.15 is a schematic structural diagram of a display panel according to Embodiment 2 of the present invention;

[0044] Figures 16 to 20 is a schematic structural diagram of a display panel manufacturing process according to Embodiment 3 of the present invention;

[0045] Fig.21 is a schematic structural diagram of a display panel provided by Embodiment 3 of the present invention;

[0046] Fig. 22 is a schematic diagram of a display device provided by an embodiment of the present invention.

[0047] Reference numerals:

[0048] 50' The first pattern of the transparent enclosure 51 in the prior art

[0049] 60' Electrochromic part 60 in the prior art Electrochromic layer

[0050] 100 display panel 61 first part electrochromic layer

[0051] 10 substrate 62 second electrochromic layer

[0052] 11 pixel opening area 70 second conductive layer

[0053] 12 Separation area 71 Third pattern

[0054] 20 light emitting device 80 flat layer

[0055] 30 Encapsulation layer 81 First flat layer

[0056] 40 first conductive layer 82 second flat layer

[0057] 41 second pattern 90 touch layer

[0058] 50 barrier layer 1000 display device DETAILED DESCRIPTION

[0059] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0060] Figure 1 FIG. 1 shows a schematic diagram of the structure of a display panel in the prior art. Figure 1As shown, the display panel 100' with anti-peeping function in the prior art includes a substrate 10' and a light-emitting function 20', an encapsulation layer 30', a first conductive layer 40', an electrochromic layer, and a second conductive layer 70' which are sequentially stacked on one side of the substrate 10'. The electrochromic layer includes a transparent enclosure 50' and an electrochromic portion 60', wherein the transparent enclosure 50' has a hollow area, and the electrochromic portion 60' is filled in the hollow area. When different driving voltages are applied to the first conductive layer 40' and the second conductive layer 70', respectively, the voltage difference forms an electric field between the first conductive layer 40' and the second conductive layer 70', and under the action of the electric field, the electrochromic portion 60' can change from a transparent state to a colored state. When the electrochromic portion 60' is in a colored state, the electrochromic portion 60' can absorb light, and the light is emitted only from the transparent enclosure 50', thereby reducing the light emission angle of the display panel, so that the display screen can be in an anti-peeping state. Currently, when the electrochromic portion 60' is filled in the hollow area of ​​the transparent enclosure portion 50', inkjet printing is used. However, the thickness precision of the electrochromic portion 60' prepared by printing is low, and a small amount of electrochromic portion material will flow to the transparent enclosure portion 50' area, affecting the light output efficiency of the display panel.

[0061] In order to solve the problem that the electrochromic part prepared by printing in the prior art has low precision and affects the light extraction efficiency of the display panel, an embodiment of the present invention provides a method for preparing a display panel. Figure 2 FIG. 1 is a flow chart showing a method for manufacturing a display panel according to an embodiment of the present invention. Figure 2 As shown, the method for preparing the display panel includes the steps of:

[0062] S100: providing a substrate, the substrate comprising a pixel opening region and a separation region between the pixel opening regions, forming a plurality of light emitting devices on the substrate, the light emitting devices corresponding to the pixel opening regions one by one;

[0063] S200: forming a first conductive layer on a side of the light emitting device away from the substrate;

[0064] S300: forming a patterned barrier layer, the barrier layer comprising a plurality of first patterns, the first patterns corresponding to the pixel opening areas one by one;

[0065] S400: forming an electrochromic layer, wherein a first portion of the electrochromic layer corresponds to the separation area one by one, and a second portion of the electrochromic layer covers the barrier layer;

[0066] S500: removing the second portion of the electrochromic layer and the barrier layer by using a stripping process;

[0067] S600: forming a second conductive layer on a side of the electrochromic layer away from the substrate.

[0068] The display panel obtained by the above-mentioned preparation method has an electrochromic layer with uniform thickness and high position accuracy on the panel, which can improve the luminous efficiency of the display panel when emitting light. In addition, the present invention eliminates the transparent material layer originally located between two adjacent first patterns of the electrochromic layer, which can reduce the number of thin film layers located above the light-emitting device, thereby improving the luminous efficiency of the light-emitting device and improving the luminous brightness of the display panel.

[0069] Furthermore, the present invention also provides a display panel prepared by the above-mentioned display panel preparation method, and the display panel can achieve all the technical effects of the above-mentioned preparation method. The display panel comprises: a substrate, comprising a pixel opening area and a separation area located between the pixel opening areas;

[0070] A plurality of light emitting devices are disposed on one side of the substrate and correspond one to one with the pixel opening areas;

[0071] A first conductive layer, located on a side of the light emitting device away from the substrate;

[0072] A patterned electrochromic layer is located on a side of the first conductive layer away from the substrate and corresponds one-to-one to the separation areas;

[0073] The second conductive layer is located on a side of the electrochromic layer away from the substrate.

[0074] The display panel may be a flexible display screen or a rigid display screen. For example, the display screen may be an organic light-emitting diode (OLED) display screen, a mini organic light-emitting diode (Mini organic light-emitting diode) display screen, a micro organic light-emitting diode (Micro organic light-emitting diode) display screen, a quantum dot light emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0075] Furthermore, an embodiment of the present invention also provides a display device, including the display panel as described above, so that the display device can achieve all the technical effects of the above display panel.

[0076] Specifically, the display device 1000 may be any device that displays images, whether in motion (e.g., video) or fixed (e.g., still images), and whether text or images. More specifically, it is contemplated that the embodiments described may be implemented in or associated with a variety of electronic devices. The various electronic devices described may include, but are not limited to, mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, video cameras, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays, electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures.

[0077] The following will further describe the method for manufacturing a display panel, a display panel, and a display device of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0078] Example 1

[0079] Figures 3 to 7 FIG. 1 is a schematic diagram showing a structure of a display panel manufacturing process according to an embodiment of the present invention. Figures 2 to 7 The method for preparing the display panel in this embodiment includes the following steps:

[0080] Step S100: providing a substrate 10, the substrate 10 comprising a pixel opening region 11 and a separation region 12 located between the pixel opening regions 11, forming a plurality of light emitting devices 20 on the substrate 10, the light emitting devices 20 corresponding to the pixel opening regions 11 one by one, and obtaining Figure 3 The light emitting device 20 in this application is explained as an OLED light emitting device.

[0081] Step S200: forming a first conductive layer 40 on a side of the light emitting device 20 away from the substrate 10, and obtaining Figure 4 The structural diagram shown.

[0082] Step S300: forming a patterned barrier layer 50, wherein the barrier layer 50 includes a plurality of first patterns 51, and the first patterns 51 correspond to the pixel opening regions 11 one by one, and the Figure 5 The structure diagram shown in the figure. The patterned barrier layer 50 is first prepared on the front of the panel by a coating process, and then the barrier layer 50 is formed into a plurality of first patterns 51 by photolithography and etching technology. The first patterns 51 obtained by photolithography and etching technology are located on the panel with high position accuracy. Correspondingly, the accuracy of other positions not filled with the first pattern 51 is also high.

[0083] Step S400: forming an electrochromic layer 60, wherein the first portion of the electrochromic layer 61 corresponds to the partition 12, and the second portion of the electrochromic layer 62 covers the barrier layer 50, and the electrochromic layer 60 is formed. Figure 6 The electrochromic layer 60 can be formed by a coating process. In some embodiments, the electrochromic layer 60 can be prepared by a coating process. The thickness of the electrochromic layer formed by the coating process is high in precision, so the thickness uniformity of the electrochromic layer on the display panel can be improved.

[0084] Step S500: Remove the second portion of the electrochromic layer 62 and the barrier layer 50 by a stripping process to obtain Figure 7 The structure diagram shown. By first forming the entire electrochromic layer 60, the first part of the electrochromic layer 61 of the electrochromic layer 60 fills the gap between the adjacent first patterns 51, and then the unnecessary second part of the electrochromic layer 62 and the barrier layer 50 are removed by a stripping process, the thickness of the first part of the electrochromic layer 61 existing in the substrate 10 is uniform, and the position of the first part of the electrochromic layer 61 is high in accuracy, and it will not flow to the pixel opening area 11 to affect the luminous efficiency of the light-emitting device 20.

[0085] Step S600: forming a second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, and obtaining Figure 8 The first conductive layer 40 and the second conductive layer 70 may be transparent electrodes. It should be noted that since the first conductive layer 40 and the second conductive layer 70 cannot be electrically connected, the second conductive layer 70 is patterned to form a plurality of third patterns 71, and the third patterns 71 are located on the side of the electrochromic layer 60 away from the substrate 10.

[0086] The first conductive layer 40 and the second conductive layer 70 are disposed at both ends of the second electrochromic layer 62. When different driving voltages are applied to the first conductive layer 40 and the second conductive layer 70, respectively, the voltage difference forms an electric field between the first conductive layer 40 and the second conductive layer 70. Under the action of the electric field, the first electrochromic layer 61 can change from a transparent state to a colored state. When the first electrochromic layer 61 is in a colored state, it can absorb light, and the light is emitted only from a small angle area where the first electrochromic layer 61 is not disposed, thereby reducing the light emission angle of the display panel, so that the display screen can be in an anti-peeping state.

[0087] The display panel obtained by the above-mentioned preparation method has an electrochromic layer 60 with uniform thickness and high position accuracy on the panel, which can improve the luminous efficiency of the display panel when it is luminous. In addition, the invention eliminates the transparent material layer originally located between two adjacent first patterns of the electrochromic layer 60, which can reduce the number of thin film layers located above the light-emitting device 20, thereby improving the luminous efficiency of the light-emitting device and improving the luminous brightness of the display panel.

[0088] Furthermore, if Figure 3As shown, before forming the first conductive layer 40 on the side of the light emitting device 20 away from the substrate 10, the following steps are also included:

[0089] The encapsulation layer 30 is formed on a side of the light emitting device 20 away from the substrate 10 .

[0090] The encapsulation layer 30 is used to isolate water vapor and oxygen, provide a good encapsulation effect for the light emitting device 20 , and improve the service life of the light emitting device 20 .

[0091] Furthermore, if Fig. 9 As shown, after forming the second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, the following steps are also included:

[0092] Forming a flat layer 80 on a side of the second conductive layer 70 away from the substrate 10;

[0093] A touch layer 90 is formed on a side of the planar layer 80 away from the substrate 10 .

[0094] The flat layer 80 is used to provide flatness for the surface of the display panel, thereby improving the display effect and user experience. In this embodiment, the flat layer 80 includes a first flat layer 81 and a second flat layer 82. In other embodiments, the flat layer 80 can also be set as a single layer, which is not specifically limited here. The flat layer 80 can be formed by inkjet printing.

[0095] The touch layer 90 is used to detect the touch position of the finger on the display panel and convert the position information into an electrical signal to implement corresponding operations.

[0096] The embodiment of the present invention further provides a display panel manufactured by the manufacturing method of the embodiment of the present invention. Fig. 9 As shown, the display panel 100 includes:

[0097] The substrate 10 includes a pixel opening area 11 and a separation area 12 located between the pixel opening areas 11;

[0098] A plurality of light emitting devices 20 are disposed on one side of the substrate 10 and correspond one to one with the pixel opening areas 11;

[0099] A side away from the first conductive layer 40 and located at a side of the light emitting device 20 away from the substrate 10;

[0100] The patterned electrochromic layer 60 is located on a side of the first conductive layer 40 away from the substrate 10 and corresponds to the separation areas 12 one by one;

[0101] The second conductive layer 70 is located on a side of the electrochromic layer 60 away from the substrate 10 .

[0102] The second conductive layer 70 includes a plurality of third patterns 71 , and the third patterns 71 correspond to the separation regions 12 one by one.

[0103] Furthermore, the display panel 100 in this embodiment further includes: an encapsulation layer 30 located on a side of the light emitting device 20 away from the substrate 10 and filling the separation area 12 ; a planarization layer 80 and a touch layer 90 located on a side of the second conductive layer 70 away from the substrate 10 .

[0104] The display panel manufactured by the manufacturing method provided in this embodiment can achieve all the technical effects of the manufacturing method, which will not be described in detail here.

[0105] Example 2

[0106] Figures 10 to 14 FIG. 1 is a schematic diagram of a structure of a display panel manufacturing process provided by another embodiment of the present invention. Compared with the method for manufacturing a display panel in Embodiment 1, step S100 and step S200 of the manufacturing method in this embodiment are the same as those in Embodiment 1 and are not described in detail here. The difference is that, before step S300 of Embodiment 1 forms a patterned barrier layer 50 on the side of the first conductive layer 40 away from the substrate 10, the step S100 further includes:

[0107] The first conductive layer 40 is patterned to form a plurality of second patterns 41, wherein the second patterns 41 correspond to the separation regions 12 one by one, and the result is as follows: Fig.10 The structure shown.

[0108] Since the first conductive layer 40 is not patterned in Embodiment 1, the structure diagram of the display panel preparation process obtained in the subsequent steps is different. Figures 11 to 14 The steps shown are used to further explain the preparation method of this embodiment.

[0109] Furthermore, the preparation method provided by the embodiment of the present invention further comprises step S300: forming a patterned barrier layer 50, wherein the barrier layer 50 comprises a plurality of first patterns 51, wherein the first patterns 51 correspond to the pixel opening regions 11 one by one, and the Fig.11 Compared with the embodiment 1, since the first conductive layer 40 includes a plurality of second patterns 41, a gap is provided between two adjacent second patterns 41, and the first pattern 51 of the barrier layer 50 is provided in the gap, rather than the first pattern 51 in the embodiment 1 being provided on the side of the first conductive layer 40 away from the substrate 10, it is equivalent to having one less thin film on the top of the light-emitting device 20, which can improve the light-emitting efficiency of the light-emitting device 20 to a certain extent and improve the light-emitting brightness of the light-emitting device 20.

[0110] Step S400: forming an electrochromic layer 60 on the side of the first conductive layer 40 and the barrier layer 50 away from the substrate 10, wherein the first portion of the electrochromic layer 61 corresponds to the separation area 12 one by one, and the second portion of the electrochromic layer 62 covers the barrier layer 50, and the electrochromic layer 60 is formed. Fig.12The structural diagram shown.

[0111] Step S500: Remove the second portion of the electrochromic layer 62 and the barrier layer 50 by a stripping process to obtain Fig.13 The structural diagram shown.

[0112] Step S600: forming a second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, and patterning the second conductive layer 70 to form a plurality of third patterns 71, wherein the third patterns 71 correspond to the second patterns 41 one by one, and obtaining the following: Fig.14 The structure shown.

[0113] Compared with Example 1, the first conductive layer 40 and the second conductive layer 70 in this embodiment are both patterned graphics, and the first conductive layer 40 and the second conductive layer 70 are only located on both sides of the second pattern 51 of the blocking layer 50, that is, the first conductive layer 40 and the second conductive layer 70 only correspond one-to-one to the separation area 12, and the pixel opening area 11 does not have the first conductive layer 40 and the second conductive layer 70, and the film layer set on the pixel opening area 11 is reduced, which will correspondingly increase the transmittance of the light-emitting device 20 when emitting light, and increase the brightness of the display panel when emitting light.

[0114] The process steps for preparing the barrier layer 50 and the electrochromic layer 60 and the corresponding technical effects achieved here can be referred to the explanation in Example 1, and will not be repeated here.

[0115] Furthermore, if Fig.10 As shown, before forming the first conductive layer 40 on the side of the light emitting device 20 away from the substrate 10, the following steps are also included:

[0116] The encapsulation layer 30 is formed on a side of the light emitting device 20 away from the substrate 10 .

[0117] The encapsulation layer 30 is used to isolate water vapor and oxygen, and provide a good encapsulation effect for the light-emitting display device.

[0118] Furthermore, if Fig.15 As shown, after forming the second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, the following steps are also included:

[0119] Forming a flat layer 80 on a side of the second conductive layer 70 away from the substrate 10;

[0120] A touch layer 90 is formed on a side of the planar layer 80 away from the substrate 10 .

[0121] The flat layer 80 is used to provide flatness for the surface of the display panel, thereby improving the display effect and user experience. In this embodiment, the flat layer 80 includes a first flat layer 81 and a second flat layer 82. In other embodiments, the flat layer 80 can also be set as a single layer, which is not specifically limited here. The flat layer 80 can be formed by inkjet printing.

[0122] The touch layer 90 is used to detect the touch position of the finger on the display panel and convert the position information into an electrical signal to implement corresponding operations.

[0123] Furthermore, the patterned first conductive layer 40 and second conductive layer 70 in this embodiment may be formed by, after forming the second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10 in step S600 in embodiment 1, further comprising the following steps:

[0124] The first conductive layer 40 and the second conductive layer 70 are patterned. The first conductive layer 40 forms a plurality of second patterns 41 , and the second conductive layer 70 forms a plurality of third patterns 71 . The second patterns 41 and the third patterns 71 correspond to the separation regions 12 one by one.

[0125] Patterning the first conductive layer 40 and the second conductive layer 70 in the same step can simplify the manufacturing process of the panel and improve the manufacturing efficiency of the panel.

[0126] The embodiment of the present invention further provides a display panel manufactured by the manufacturing method of the embodiment of the present invention. Fig.15 As shown, the display panel 100 includes:

[0127] The substrate 10 includes a pixel opening area 11 and a separation area 12 located between the pixel opening areas 11;

[0128] A plurality of light emitting devices 20 are disposed on one side of the substrate 10 and correspond one to one with the pixel opening areas 11;

[0129] The first conductive layer 40 is located at a side of the light emitting device 20 away from the substrate 10 ; the first conductive layer 40 includes a plurality of second patterns 41 , and the second patterns 41 correspond to the separation areas 12 one by one.

[0130] The patterned electrochromic layer 60 is located on a side of the first conductive layer 40 away from the substrate 10 and corresponds to the separation areas 12 one by one;

[0131] The second conductive layer 70 is located at a side of the electrochromic layer 60 away from the substrate 10 ; the second conductive layer 70 includes a plurality of third patterns 71 , and the third patterns 71 correspond to the second patterns 41 one by one.

[0132] Furthermore, the display panel 100 in this embodiment further includes: an encapsulation layer 30 located on a side of the light emitting device 20 away from the substrate 10 and filling the separation area 12 ; a planarization layer 80 and a touch layer 90 located on a side of the second conductive layer 70 away from the substrate 10 .

[0133] The display panel manufactured by the manufacturing method provided in this embodiment can achieve all the technical effects of the manufacturing method, which will not be described in detail here.

[0134] Example 3

[0135] Figures 16 to 20 FIG. 1 is a schematic diagram of a structure in a process of preparing a display panel according to another embodiment of the present invention. Compared with the method for preparing a display panel in Embodiment 2, the patterned first conductive layer 40 (eg, Fig.16 The steps before are the same as shown in FIG. 300 and will not be described again. The difference is that in step S300, a patterned barrier layer 50 is formed, and the barrier layer 50 includes a plurality of first patterns 51, and the first patterns 51 correspond to the pixel opening regions 11 one by one, and a gap is provided between the first patterns 51 and the adjacent patterned first conductive layer 40, so as to obtain Fig.17 The structure shown.

[0136] Since there is no gap between the patterned first conductive layer 40 and the patterned barrier layer 50 in Embodiment 2, the structure diagram of the display panel preparation process obtained in the subsequent steps is different. Figures 18 to 20 The steps shown are used to further explain the preparation method of this embodiment.

[0137] Furthermore, the method for manufacturing a display panel provided in an embodiment of the present invention further includes the steps of:

[0138] Step 400: forming an electrochromic layer 60 on the side of the first conductive layer 40 away from the substrate 10, wherein the first portion of the electrochromic layer 61 corresponds to the separation area 12 one by one, and the first portion of the electrochromic layer 61 covers the edge of the second pattern 41, and the second portion of the electrochromic layer 62 covers the barrier layer 50, and the electrochromic layer 60 is formed on the first conductive layer 40. Fig.18 The electrochromic layer 60 covers the first conductive layer 40 to further improve the anti-peeping angle.

[0139] Step S500: Remove the second portion of the electrochromic layer 62 and the barrier layer 50 by a stripping process to obtain Fig.19 The structural diagram shown.

[0140] Step S600: forming a second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, and obtaining Fig. 20 The structure shown.

[0141] The process steps for preparing the barrier layer 50 and the electrochromic layer 60 and the corresponding technical effects achieved here can be referred to the explanation in Example 1, and will not be repeated here.

[0142] Furthermore, before forming the first conductive layer 40 on the side of the light emitting device 20 away from the substrate 10, the method further includes the following steps:

[0143] The encapsulation layer 30 is formed on the side of the light emitting device 20 away from the substrate 10, so as to obtain Fig.16 The structural diagram shown.

[0144] The encapsulation layer 30 is used to isolate water vapor and oxygen, and provide a good encapsulation effect for the light-emitting display device.

[0145] Furthermore, if Fig.21 As shown, after forming the second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, the following steps are also included:

[0146] Forming a flat layer 80 on a side of the second conductive layer 70 away from the substrate 10;

[0147] A touch layer 90 is formed on a side of the planar layer 80 away from the substrate 10 .

[0148] The flat layer 80 is used to provide flatness for the surface of the display panel, thereby improving the display effect and user experience. In this embodiment, the flat layer 80 includes a first flat layer 81 and a second flat layer 82. In other embodiments, the flat layer 80 can also be set as a single layer, which is not specifically limited here. The flat layer 80 can be formed by inkjet printing.

[0149] The touch layer 90 is used to detect the touch position of the finger on the display panel and convert the position information into an electrical signal to implement corresponding operations.

[0150] The embodiment of the present invention further provides a display panel manufactured by the manufacturing method of the embodiment of the present invention. Fig.21 As shown, the display panel 100 includes:

[0151] The substrate 10 includes a pixel opening area 11 and a separation area 12 located between the pixel opening areas 11;

[0152] A plurality of light emitting devices 20 are disposed on one side of the substrate 10 and correspond one to one with the pixel opening areas 11;

[0153] The first conductive layer 40 is located at a side of the light emitting device 20 away from the substrate 10; the first conductive layer 40 includes a plurality of second patterns 41, and the second patterns 41 correspond to the separation areas 12 one by one;

[0154] The patterned electrochromic layer 60 is located on a side of the first conductive layer 40 away from the substrate 10 and corresponds to the separation area 12 one by one; the electrochromic layer 60 covers the edge of the second pattern 41;

[0155] The second conductive layer 70 is located on a side of the electrochromic layer 60 away from the substrate 10 .

[0156] Furthermore, the display panel 100 in this embodiment further includes: an encapsulation layer 30 located on a side of the light emitting device 20 away from the substrate 10 and filling the separation area 12 ; a planarization layer 80 and a touch layer 90 located on a side of the second conductive layer 70 away from the substrate 10 .

[0157] The display panel manufactured by the manufacturing method provided in this embodiment can achieve all the technical effects of the manufacturing method, which will not be described in detail here.

[0158] This embodiment 4

[0159] An embodiment of the present invention further provides a display device, comprising the display panel as described above. Fig. 22 FIG. 1 is a schematic diagram of a display device provided by an embodiment of the present invention. Fig. 22 As shown, the display device includes the display panel 100 as described above, so all technical effects of the display panel 100 can be obtained, which will not be repeated here.

[0160] The display panel manufacturing method, display panel and display device provided by the present invention have the following advantages:

[0161] The present invention utilizes a combination of coating and stripping technologies to prepare an electrochromic layer. The obtained electrochromic layer has a uniform thickness and is arranged on a panel with high positional accuracy, which can improve the luminous efficiency of the display panel when emitting light. In addition, the present invention eliminates the transparent material layer originally located between two adjacent first patterns of the electrochromic layer, which can reduce the number of thin film layers located above the light-emitting device, thereby also improving the luminous efficiency of the light-emitting device and improving the luminous brightness of the display panel.

[0162] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A method for preparing a display panel, characterized in that: The preparation method comprises the steps of: Providing a substrate, the substrate comprising a pixel opening area and a separation area between the pixel opening areas, forming a plurality of light emitting devices on the substrate, the light emitting devices corresponding to the pixel opening areas one by one; forming a first conductive layer on a side of the light emitting device away from the substrate; forming a patterned blocking layer, the blocking layer comprising a plurality of first patterns, the first patterns corresponding to the pixel opening areas one by one; forming an electrochromic layer on a side of the first conductive layer away from the substrate, wherein a first portion of the electrochromic layer corresponds to the separation areas one by one, and a second portion of the electrochromic layer covers the barrier layer; removing the second portion of the electrochromic layer and the barrier layer by a stripping process; A second conductive layer is formed on a side of the electrochromic layer away from the substrate.

2. The method for preparing a display panel according to claim 1, characterized in that: Before forming the patterned barrier layer, the method further comprises the following steps: The first conductive layer is patterned to form a plurality of second patterns, wherein the second patterns correspond to the separation areas one by one.

3. The method for preparing a display panel according to claim 2, characterized in that: The electrochromic layer covers the edge of the second pattern.

4. The method for preparing a display panel according to claim 2 or 3, characterized in that: After forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further comprises the steps of: The second conductive layer is patterned to form a plurality of third patterns, wherein the third patterns correspond to the second patterns one by one.

5. The method for preparing a display panel according to claim 1, characterized in that: After forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further comprises the steps of: The first conductive layer and the second conductive layer are patterned, the first conductive layer forms a plurality of second patterns, the second conductive layer forms a plurality of third patterns, and the second patterns correspond to the third patterns and the separation areas one by one.

6. The method for preparing a display panel according to claim 1, characterized in that: The electrochromic layer is formed by a coating process.

7. The method for preparing a display panel according to claim 1, characterized in that: After forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further comprises the steps of: forming a flat layer on a side of the second conductive layer away from the substrate; A touch layer is formed on a side of the planar layer away from the substrate.

8. The method for preparing a display panel according to claim 1, characterized in that: Before forming the first conductive layer on the side of the light emitting device away from the substrate, the method further comprises the following steps: An encapsulation layer is formed on a side of the light emitting device away from the substrate.

9. A display panel, characterized in that: include: A substrate, comprising pixel opening regions and separation regions between the pixel opening regions; A plurality of light emitting devices are disposed on one side of the substrate and correspond one to one with the pixel opening areas; A first conductive layer, located on a side of the light emitting device away from the substrate; A patterned electrochromic layer is located on a side of the first conductive layer away from the substrate and corresponds one-to-one to the separation areas; The second conductive layer is located on a side of the electrochromic layer away from the substrate.

10. The display panel according to claim 9, characterized in that: The first conductive layer includes a plurality of second patterns, and the second patterns correspond to the separation regions one by one.

11. The display panel according to claim 10, characterized in that: The second conductive layer includes a plurality of third patterns, and the third patterns correspond to the second patterns one by one.

12. The display panel according to claim 10, characterized in that: The electrochromic layer covers the edge of the second pattern.

13. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 9 to 12.

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